Definition: Servius Galba was born December 24, 3 B.C., in Tarracina (modern Terracina, Italy), the son of C. Sulpicius Galba and Mummia Achaica. He was adopted by Livia, the mother of Tiberius. Galba served in civil and military positions throughout the reigns of the Julio-Claudian emperors, but when he became aware that Nero wanted him killed, he rebelled. Galba's agents won over to their side Nero's praetorian prefect. After Nero committed suicide, Galba became emperor, coming to Rome in October 68, in the company of Otho, governor of Lusitania (modern Portugal). Galba antagonized many, including Otho, who promised financial rewards to the praetorians in exchange for their support. They declared Otho emperor on January 15, 69, and killed Galba.
Examples:The emperor before Galba was Nero, the last of the Julio-Claudian emperors.